/Engine/Source/Developer/ShaderCompilerCommon/Public/SpirvReflectCommon.h
Assigns the binding location for all input attributes by its semantic index if their name is equal to 'SemanticName'. Used for vertex shaders where all input attributes have the "ATTRIBUTE" semantic.
void AssignInputAttributeLocationsBySemanticIndex ( spv_reflect::ShaderModule & SpirvReflection, const ANSICHAR * SemanticName )